Malicious PDF — malware analysis report

Static analysis result for SHA-256 97379968338960f9…

MALICIOUS

PDF

113.1 KB Created: 2020-08-11 19:52:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e421684a8e28681544c3f225e9ec0b6a SHA-1: ff8691da861879850ce82c6470819cc8c33bf856 SHA-256: 97379968338960f916f7104567e5a0ad5757a32ae0e682ddab1c386970346963
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the ttraff.com URL as malicious. The presence of a 'download button' lure further supports a social engineering attack. The document body, though heavily obfuscated, contains the malicious URL.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=assembler+language+tutorial+pdf
    • http://files.huntingthewinds.com/uploads/1/3/1/3/131381607/situf.pdf
    • http://files.hprcsc.org/uploads/1/3/1/3/131398555/eb45407acbc2da.pdf
    • http://files.uusintaensemble.fi/uploads/1/3/1/8/131858044/8920717.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kulabegidubonigupux.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vaxopegi.pdf
    • https://cdn.shopify.com/s/files/1/0437/9577/5650/files/89320518157.pdf
    • https://cdn.shopify.com/s/files/1/0433/9341/7366/files/fovaforutefuzogimab.pdf
    • https://cdn.shopify.com/s/files/1/0430/6822/7737/files/xuzasonel.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8764/files/hak_asasi_manusia_dalam_kesehatan.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7039/files/wijabusopinalumijujaso.pdf
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/76684048499.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/resume_format_for_marketing_manager.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nawujumukupuzuwoxelojoses.pdf
    • https://cdn.shopify.com/s/files/1/0432/2741/4696/files/fumusokilevibesujivu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016971.bin
2963bb164216b0473ffaaf3220880c506194b32c082e04abcf825fde59f49586
pdf-font-stream PDF embedded font (sfnt) at offset 0x16971 5372 bytes
font_01_sfnt_off00017b8f.bin
0e5320359dd0d040678745698e4597999fe59ddeee4d2479d68b6d013504c480
pdf-font-stream PDF embedded font (sfnt) at offset 0x17B8F 14364 bytes
font_02_sfnt_off0001a919.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x1A919 4324 bytes